Sidney d



S. D. WALDON.

HYDROCARBON MOTOR.

APPLICATION FILED FEB. I6. |916.

l ,323,58. I Patented Deo. 2, 1919.

onirica.

SIIONEY I). WALDON', OF DETROIT, MICHIGMT, .ASSIGNO TO CADILLAC MOTOR CAB COMPANY, OF DETROIT, MICHIGAN, A. CORPORATION 0F MICHIGAN.

HYDROCABBONMOTOB.

I Specification' of Letters Patent.

Patented Dec. 2, 1919.

- Application filed February 1U, 1916. Serial No. 78,609.

To all whom z't may concern:

Be itknown that I, SIDNEY D. WALDoN, a citizen of the United States, and resident of Detroit, Wayne county, State of M1chigan, have invented certain new and useful Improvements inA Hydrocarbon-Motors, of which the following is a specification.

This invention relates to hydrocarbon motors, and particularly to circulating systems,'which may be easily applied thereto.

Another conduit 23 connects a discharge One of the salient objects of this invention is lto provide a simple and efficient means for' controlling the circulating medium in a iliquid system, particularly of the forced 'circulation y type without setting upobjectionable back pressures when the circulation is retarded. c

Another object is to provide a forced c1r culating cooling system, such as used 1n a hydrocarbon motor, with means for positively and effectively stopping the entire circulationof the cooling medium, without encountering the objectionable features 'which have resulted with `the use of previously known systems. I

Another object is to provide a liquid cooli ing 'systemcomprising a pump, the usual jacket, radiator and connections, with a shunt circuit around the pump, the circulation through which is adapted yto be con-` trolled by a valve mechanism.

Another object is to provide a valve mechanism in the connections between the jacket, radiator and pump, andadapted to be actuated by the temperature of theA liquid in the jacket.

y These, and other objects, will appear from the following description, taken in connection with the accompanying drawings, which form a part of this specification, and

which Figure 1 is a side elevation, with portions broken away, of a power plant, embodying a referred form of my-invention;

ig. 2 is a transverse vertical section, substantially on the line 2 2 of Fig. 1;y and Fig. 3 is a horizontal motion, substan# tially on the line 3 3 of Fig. 2.

' Referring to the'drawings, 10 representsthe usual, crank case of a hydrocarbon motor, on which may be mounted, in suitable V or other relation, a plurality of cylinder blocks, one of which is illustrated at 11. The usual radiator.1 2 and fan 13 'are arranged at the front end of the motor.l

The cylinder .block is -provided with the may be connected as by a similar conduit 20,

to an intake port 21 formed in the casing 22 of a pump mechanism, which will' be more particularly described hereinafter.

port 24 of the pump casing with the jacket intake port 15.

The well known crank shaft 25 is illus- `trat/ed, particularly in Fig. 2, as suitably mounted in the crank case 10, and is .provided with a spiral gear 26, which is adapted to drive asimilar gear 27 on a pump shaft 28. This shaft is arranged belowl the crank shaft, transversely thereto, in suitable plain bearings 29 in the crank case, and another bearing 30 in the pump casing 22. A pump impeller, of the well known turbine type,1s shown at 31, as mounted on the shaft 28 and secured thereon, as by a pin 32.

The pump casing 22, which is adapted to be mounted on the crank case, as by bolts 33,

has its intake port'21 leading into an in teriorly arranged shell 35, shown asformed integral with the casing. This shell has ports 36 and 37 formed in its upper and lower portions, respectively, leading to the interior of the pump casing. A channel 38 is also formed in the casing 22 and forms a shuntcircuit between the discharge port 24 of the casing and the suctionchamber 39 through a port 40, which is formed in a 'wall 41 between the suction chamber and the channel 38.

-The circulation of the cooling medium is adapted to be controlled by a valve mechamember is adaptedfto control the circulation through the ports 21, 36 and 37. It will be noted that the u'pper part of the valve rod 42 extends through the cover 47 of the'val've `casing to a point within a thermo- 'stat chamber 48, which lis secured, "as by bolts 49, to the cylinder jacket 14; and 'a thermostat 50, whose upper end isadapted to be threaded, as at 51, to the chamber 48, has its lower-end secured to the valve rod 42, which is actuated thereby. tube 52 houses the valve rod and a 'sutiicient clearance is provided between the extcriorof the rod and its chamber, as at 53, to permit a small quantity of the cooling liquid to circulate from the thermostat chamber down into the pump chamber, thereby preventing the formation of`a dead pocket of liquid in the thermostat chamber.

Having thus described. the general construction and arrangement of parts, the operation of the cooling system will be under# stood as follows: Assuming the motor toV be started up when .the temperature of the cooling medium is below the desired heat, the thermostat will be contracted sutiiciently to seat the valve member-44- on the ports 36 and 37 thus preventing the circulation of tially the liquid through the intake port 21 from the radiator 12, and the valve'member 43 will also be lifted from the port 40 into Substanosition shown in Fig. 2;' therefore any liquid which is drawn from the suction Vchamber 39 by the impeller 31 will be returned to it through the channel 38 and port 40. Consequently there will be no circulation through the cylinder jacket 15, except for the small quantity of liquid which will be beld down through the clearance 53 between the valve rod and its housing 52, and under these conditions there will not be any circulation in conduits 17 and 20 and the radiator 12'.

However, when the temperature in the jacket rises above the desired heat, the thermostat. will expand, pushing the valve member 43 toward the port 40, thus retarding the circulation therethrough, and dropping the valve member 44 from the' ports 36 and 37, increasing the circulation through these ports and intake port -21 until the full action of the pump is exerted in forcing the liquid from the discharge port 24 through the jacket intake conduit. 23, jacket intake port l5, thence through the jacket anddischarged.

therefrom at outlet port'16 and through the connecting conduit 17, radiator 12, connectl ing conduit 20 and intake port 21 to the culation isleft unimpeded yat all times.

It will also be noted, that while I have arranged my valve mechanism on the suction side of the pump, it is adapted to be actuated by a thermostat arranged' where it will be sensitive to the temperature of the liquidv within the cylinder jacket.

A fiexible While I have described and will specifically claim what I deem to be a preferred .embodiment of my invention, it will be understood that various modications and changes may be made, by one skilled in the art, without departing from the spirit andv sco e hereof. i

avin lthus .described my. invention, what I c aim and desire to. secure by. Letters Patent is: Y

1. In a hydrocarbon-motor, the combination with a cylinder block, a'. jacket therefor, provided with an intake ort and a discharge` port, a pump mec anism theiefor having an intake' port and a discharge port,

connections between said pump and jacket for providing' a circulating system, and means for connecting said pump discharge port with its intake port independently of said jacket.l

2. In a hydrocarbon motor, the combinaprovided with an intake port -and a` discharge port, a puni ,mechanism having similar ports; a con uit -from said pump discharge port to said jacket intake, a conduit connection from said jacket vdischarge port to said pump intake, a valve mechanism in said connection, and means comprisin a valve for connecting said pump ports independent of said conduits.

4. In a hydrocarbon motor, the combination with a cylinder block, a jacket thereforprovided with an intake port and aV dis charge port, .a pum `mechanism having similar ports, la concluit from said pump discharge port to said jacket intake, a conduit from said jacket discharge port to said .pump intake, a 'valve mechanism for said pump intake port, means comprising a valve for connectin said pump ports independent of said con uits, and common thermostatically actuated means for controlling said valves.

5. In a hydrocarbon` motor the combination witha cylinder block, a jacketl therefor pnovided with an intake port and a disc'har e port, a pum mechanism having imi ar ports,l a, `con uit from said pump ischarge port to said jacket intake, a conduit from said jacket discharge port to said ioo pump intake, a valve mechanism for said l pumpintake port, means comprising a valve or'connecting said' pum ports independent' ,of said conduits, an a thermostat actuated by the temperature within said jacket "'for controlling said valves.

6. vIn la hydrocarbon motor, the combination With la cylinder jacket, a radiator, a pump, and connecting conduits whereby a cooling liquid may be circulated through said' jacket and radiator by said pump; valve mechanism for controlling the `How of cooling liquid through said jacket and radiator; a thermostat lexposed to the said cooling liquid and adapted to control said valve mechanism; and a leak passage of restricted area independent of said radiator, and through which cooling liquid may flow from said jacket to the1nlet side of said pump without passing through said radiator.

7. In a hydrocarbon motor, the combination with a cylinder jacket, a radiator, a pump, and connecting conduits whereby a cooling liquid may be circulated through said jacket and radiator by said pump;

valve mechanism for controlling the flow of cooling liquid through said jacket and ra-` diator; a thermostat operatively connected with said valve mechanism to operate the pump, and connecting condults whereby a cooling liquid may be circulated through said jacket and radiator by said pump; valve mechanism Jfor controlling the iow of cooling liquid through said jacket and radiator; a chamber secured to and co1nmunicating directly with the interior of said water ljacket; a thermostat located within said chamber and adapted to control said valve mechanism; and a leak passanfe leading from said chamber to the inlet si e of said pump and through which liquid may flow from said jacket to said pump Without passing through said radiator.

In testimony whereof I affix my signature.

lSIDNEY D. WALDON. 

